thumb|Angélo Debarre performing in Paris, April 2013 Angelo Debarre (; born August 19, 1962) is a French Romani gypsy jazz guitarist. Biography Debarre was born in Saint-Denis, Paris, and began pl
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea036e61799c3db54c1dbd9fe163198a3b2b4bb6e788ef7249411516e659a3b1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c851bd86-7c68-4434-b469-51a47940e7c4.json and https://artists.proofprofile.net/proofs/artist/c851bd86-7c68-4434-b469-51a47940e7c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec77c0fb7875bd472e4627746b06588d8eed39e37bca6696b4f2222d2aca46dd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82da8f4f287a9f7ba2600cadaaaa50f2530df3f2e6fa7fbce7505241ebcc4b79. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ea4f35aa90eca51df8df658727e556e6c4d55f403d39da1282475b3ddcebc. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeb0eb38b06ecb2af45846916444f284f450368cdbc660a1b588e31f9d9c37b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae51b89b98fac03f50a99c2a002cea73871e4e20a7b002f596b3157d553b25a. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78722116f2b7af38d2970c6f075ae4eaaa0819a1a9bdf5e6265d6c6643dbf656. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8fe8321a6087598f6a8072a7c51d04ed8334422c075e7e4d2bd4b189299b2f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afbfea3ff90f503c908e1cb9bd51c16d5fb31e6ca3f3137029beea5a60edf65. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd545d4279480d92142566eecd07a61a67b73ade6a413e2aa14946f9eb619fdfe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ae6812f5005337415a98a9341a154d8eff3ac3de17790a9dcd41c1a993c3c3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe095fc2906fd0291d9c74a39a2ec8debc9152e9c487f41ace7c462ad0e82c02a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e348ec29442e7a652faea90ab73bd64aac6be68f24cf6463694b6acd26a8c6e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36078ab71807abc1513fe469274fec3eaf0c2afb654c2c8bc2adcf3eb50cfd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3e0c2fb7612d2b7cde666d30061829381ce4ae90e500603e2219ad37db5573. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce466654af8329ad47e2a4aa4c6fdf3cd21295d0dd5789523764b950004b077e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acfb941d654df1213b59b4a634010eed2070cf71d473ed8b63403f9be537447. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23737ea4212f3e15b5aa77ea22c2665e79bd17149e18ceb8f76dcb369e6b4ac6. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFHH1327200.